/*
 * This code based on Silicon Graphics, Inc.'s redbook
 * http://www.opengl.org/resources/code/samples/redbook/
 */

/*
 * Copyright (C) 2008 aki@akjava.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * original code license
 * Copyright (c) 1993-1997, Silicon Graphics, Inc.
 * ALL RIGHTS RESERVED 
 * Permission to use, copy, modify, and distribute this software for 
 * any purpose and without fee is hereby granted, provided that the above
 * copyright notice appear in all copies and that both the copyright notice
 * and this permission notice appear in supporting documentation, and that 
 * the name of Silicon Graphics, Inc. not be used in advertising
 * or publicity pertaining to distribution of the software without specific,
 * written prior permission. 
 *
 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON
 * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN
 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
 * 
 * US Government Users Restricted Rights 
 * Use, duplication, or disclosure by the Government is subject to
 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
 * (c)(1)(ii) of the Rights in Technical Data and Computer Software
 * clause at DFARS 252.227-7013 and/or in similar or successor
 * clauses in the FAR or the DOD or NASA FAR Supplement.
 * Unpublished-- rights reserved under the copyright laws of the
 * United States.  Contractor/manufacturer is Silicon Graphics,
 * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.
 *
 * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
 */

package com.akjava.android.openglsamples.redbook;

import java.nio.FloatBuffer;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;

import com.akjava.android.openglsamples.GLUT;
import com.akjava.android.openglsamples.OpenGLUtils;


public class ColorMatRenderer extends RedBookSimpleRenderer {



	public ColorMatRenderer(Context context) {
       super(context);
    }



    public void setUpBuffers() {
    	  
    	   
    	  float eqn[] = {0.0f, 1.0f, 0.0f, 0.0f};
   	   float eqn2[] = {1.0f, 0.0f, 0.0f, 0.0f};
   	eqnBuffer=FloatBuffer.wrap(eqn);
   	eqn2Buffer=FloatBuffer.wrap(eqn2);
    }
    FloatBuffer eqnBuffer,eqn2Buffer;
    

    public void onSurfaceChanged(GL10 gl, int w, int h) {
    	gl.glViewport(0, 0,w,h);
    	gl.glMatrixMode(GL10.GL_PROJECTION);
    	gl. glLoadIdentity();
    	   if (w <= h)
    	      gl.glOrthof(-1.5f, 1.5f, -1.5f*(float)h/(float)w,
    	               1.5f*(float)h/(float)w, -10.0f, 10.0f);
    	   else
    		   gl.glOrthof (-1.5f*(float)w/(float)h,
    	               1.5f*(float)w/(float)h, -1.5f, 1.5f, -10.0f, 10.0f);
    	   gl.glMatrixMode(GL10.GL_MODELVIEW);
    	   gl.glLoadIdentity();
    }



    public void onDrawFrame(GL10 gl) {
    	   gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    	  
    	       //update colors
    		   diffuseMaterialBuffer.clear();
    		   diffuseMaterialBuffer.put(diffuseMaterial);
    		   diffuseMaterialBuffer.position(0);
    		   gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, diffuseMaterialBuffer);
    		   
    	      	   gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
    	           GLUT.glutSolidSphere(gl,1.0f, 20, 16);

		
    }



	


    float diffuseMaterial[] = { 1.0f, 0.5f, 0.5f, 1.0f };
    FloatBuffer diffuseMaterialBuffer=OpenGLUtils.allocateFloatBuffer(4*4);
	@Override
	public void onSurfaceCreated(GL10 gl, EGLConfig config) {setUpBuffers();
		 float mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
  	     float light_position[] = { 1.0f, 1.0f, 1.0f, 0.0f };

  	     
  	   diffuseMaterialBuffer.clear();
	   diffuseMaterialBuffer.put(diffuseMaterial);
	   diffuseMaterialBuffer.position(0);
  	     
  	   gl.glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
  	 gl.glShadeModel (GL10.GL_SMOOTH);
  	gl.glEnable(GL10.GL_DEPTH_TEST);
  	gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, diffuseMaterialBuffer);
  	gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_SPECULAR, FloatBuffer.wrap(mat_specular));
  	gl.glMaterialf(GL10.GL_FRONT_AND_BACK, GL10.GL_SHININESS, 25.0f);
  	gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, FloatBuffer.wrap(light_position));
  	gl.glEnable(GL10.GL_LIGHTING);
  	gl.glEnable(GL10.GL_LIGHT0);

    //gl.glColorMaterial(GL10.GL_FRONT, GL10.GL_DIFFUSE);
  	//gl. glEnable(GL10.GL_COLOR_MATERIAL);
	}

    public void actionLeft(){
    	diffuseMaterial[0]+=0.1;
    	if(diffuseMaterial[0]>1.0){
    		diffuseMaterial[0]=0;
    	}
    }
    
	public void actionUp(){
		diffuseMaterial[1]+=0.1;
    	if(diffuseMaterial[1]>1.0){
    		diffuseMaterial[1]=0;
    	}
    }
	
    public void actionDown(){
    	
    }
    public void actionRight(){
    	diffuseMaterial[2]+=0.1;
    	if(diffuseMaterial[2]>1.0){
    		diffuseMaterial[2]=0;
    	}
    }
    public void actionCenter(){
    	diffuseMaterial[0]=0.5f;
    	diffuseMaterial[1]=0.5f;
    	diffuseMaterial[2]=0.5f;
    }

	
}


